The left hemisphere of the human brain is
largely responsible for language. Men are more likely
to suffer speech disorders if the left side of
their brain is damaged, women if the front part of
their brain is damaged.
Men are better at solving maths problems, but women are better with straight arithmetic. Women
are better at tests involving words and manual
dexterity. Men are better at rotating objects in space.
Professional musicians have left hemispheres
that are better developed in terms of processing sounds, compared to those of non-musicians.
The brain of our early ancestors, who lived
50,000 or even 400,000 years ago, are not noticeably different in terms of size or outward complexity.
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